2 * Copyright (c) 1997-2014 Erez Zadok
3 * Copyright (c) 1989 Jan-Simon Pendry
4 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
5 * Copyright (c) 1989 The Regents of the University of California.
8 * This code is derived from software contributed to Berkeley by
9 * Jan-Simon Pendry at Imperial College, London.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * File: am-utils/amd/info_hesiod.c
41 * Get info from Hesiod
46 #endif /* HAVE_CONFIG_H */
51 #define HES_PREFIX "hesiod."
54 #ifdef HAVE_HESIOD_INIT
55 /* bsdi3 does not define this extern in any header file */
56 extern char **hesiod_resolve(void *context, const char *name, const char *type);
57 extern int hesiod_init(void **context);
58 static voidp hesiod_context;
59 #endif /* HAVE_HESIOD_INIT */
61 /* forward declarations */
62 int amu_hesiod_init(mnt_map *m, char *map, time_t *tp);
63 int hesiod_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp);
64 int hesiod_isup(mnt_map *m, char *map);
67 * No easy way to probe the server - check the map name begins with "hesiod."
68 * Note: this name includes 'amu_' so as to not conflict with libhesiod's
69 * hesiod_init() function.
72 amu_hesiod_init(mnt_map *m, char *map, time_t *tp)
74 dlog("amu_hesiod_init(%s)", map);
77 #ifdef HAVE_HESIOD_INIT
78 if (!hesiod_context && hesiod_init(&hesiod_context) != 0)
80 #endif /* HAVE_HESIOD_INIT */
82 return NSTREQ(map, HES_PREFIX, HES_PREFLEN) ? 0 : ENOENT;
87 * Do a Hesiod nameserver call.
88 * Modify time is ignored by Hesiod - XXX
91 hesiod_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp)
93 char hes_key[MAXPATHLEN];
95 #ifndef HAVE_HESIOD_INIT
97 #endif /* not HAVE_HESIOD_INIT */
99 dlog("hesiod_search(m=%lx, map=%s, key=%s, pval=%lx tp=%lx)",
100 (unsigned long) m, map, key, (unsigned long) pval, (unsigned long) tp);
105 xsnprintf(hes_key, sizeof(hes_key), "%s.%s", key, map + HES_PREFLEN);
110 dlog("Hesiod base is: %s\n", gopt.hesiod_base);
111 dlog("hesiod_search: hes_resolve(%s, %s)", hes_key, gopt.hesiod_base);
112 if (amuDebug(D_INFO))
113 _res.options |= RES_DEBUG;
115 #ifdef HAVE_HESIOD_INIT
116 /* new style hesiod */
117 rvec = hesiod_resolve(hesiod_context, hes_key, gopt.hesiod_base);
118 #else /* not HAVE_HESIOD_INIT */
119 rvec = hes_resolve(hes_key, gopt.hesiod_base);
120 #endif /* not HAVE_HESIOD_INIT */
123 * If a reply was forthcoming then return
124 * it (and free subsequent replies)
127 if (m->cfm && (m->cfm->cfm_flags & CFM_SUN_MAP_SYNTAX)) {
128 *pval = sun_entry2amd(key, *rvec);
137 #ifdef HAVE_HESIOD_INIT
138 /* new style hesiod */
140 #else /* not HAVE_HESIOD_INIT */
142 * Otherwise reflect the hesiod error into a Un*x error
144 dlog("hesiod_search: Error: %d", hes_error());
145 switch (hes_error()) {
146 case HES_ER_NOTFOUND:
159 dlog("hesiod_search: Returning: %d", error);
161 #endif /* not HAVE_HESIOD_INIT */
166 * Check if Hesiod is up, so we can determine if to clear the map or not.
167 * Test it by querying for /defaults.
168 * Returns: 0 if Hesiod is down, 1 if it is up.
171 hesiod_isup(mnt_map *m, char *map)
176 static int last_status = 1; /* assume up by default */
178 error = hesiod_search(m, map, "/defaults", &val, &mtime);
179 dlog("hesiod_isup(%s): %s", map, strerror(error));
180 if (error != 0 && error != ENOENT) {
182 "hesiod_isup: error getting `/defaults' entry in map %s: %m", map);
184 return 0; /* Hesiod is down */
186 if (last_status == 0) { /* if was down before */
187 plog(XLOG_INFO, "hesiod_isup: Hesiod came back up for map %s", map);
190 return 1; /* Hesiod is up */